stove



(N0 Model.)

A E. STOVE. MEANS FOR ATTAGHING HELMETS AND BREASTPLATES T0 DIVINGDRESSES.

No. 458.750. Patented Sept. 1,1891.

UNITED STATES PATENT .OEEIOE.

ALERED sTOvE, OF LONDON, ENGLAND.

MEANS FOR ATTACHING HELMETS AND BREAST-PLATES TO DIVING-DRESSES.

SPECIFICATION forming part of Letters Patent No. 458,750, datedSeptember 1, 1891..

Application filed January 7,1891. $c1ialN0.8'77,012. (No model.)Patented in England October 27, 1888, No. 15,498; in France March 2,1889, No. 196,424, and patent of addition March 21,1889; in GermanyMarch 5, 1889, No, 49,694; in Belgium April 13, 1889,1lo. 85,819, and inItaly June 30, 1889,1111. 25,584/824 T0 aZZ whom it may concern/.-

Be it known that I, ALFRED EDWIN STOVE, a subject of the Queen of GreatBritain, and residing at 11 Queen Victoria Street, in the city of Londonand Kingdom of Great Britain, have invented an Improved Means forAttaching and Screwing Helmets and Breast- Plates to Diving-Dresses,(patented in England October 27, 1888, No. 15,498; in France March 2,1889, No. 196,424, and patent of addition March 21, 1889; in BelgiumApril 13, 1889, No. 85,819; in Germany March 5, 1889, No. 49,694, and inItaly June 30, 1889, No. 25,584/324,) of which the followingis aspecification.

This invention relates to improved means for attaching the helmet andbreast-plate to the upper part or collar of a diving-dress. Thisconnection has heretofore been effected by means of screw bolts or studsand nuts, and is found to be troublesome and to require considerabletime and care to effect properly.

According to myinvention I make the connection without any bolts orstuds and nuts whatever by means of a kind of screw bayonet-joint, incombination with a peculiarlyshaped collar on the diving-dress, as shownin the drawings hereto annexed, in which- Figure 1 is a side elevationof a diving helmet and breast-plate and the upper part of a diving-dresswith portions of the helmet and breast-plate broken away, so as to showthe connecting parts in section. Fig. 1* is a sectional view, on alarger scale, of a portion of the upper part of the diving-dress. Fig. 2is a plan of the upper part or collar of the breast-plate with thehelmet removed. Figs. 3 and 4 are enlargements of the sections of thejoint shown in Fig. 1, and correspond, respectively, to sections takenon the line X X and Y Y of Fig. 2. Fig. 5 is a similar view illustratinga slightly-modified form of this joint.

A is the helmet, and B the breast-plate5 C, a circular metallic ringforming the upper part or collar of the breast-plate and having a grooveD formed therein to receive the fillet or lip E, surrounding theindia-rubber flan ged upper part or collar F of the dress F. The

ring C is rabbeted out, as shown, and has a 5o screw-thread H formed inthe vertical side of the said rabbet. This screw-thread is cut away atthree or more points equidistant round the circumference of the rabloet,as shown at I in Fig. 2.

J is a circular metallic ring formed with or brazed to the lower part ofthe helmet and having a screw-thread K formed on its outer peripherycorresponding to the internal screw-thread II in the ring 0. Thescrewthread K on the ring J is cut away at three or more pointsequidistant round the periphery corresponding to the parts of the threadH in the ring 0 which have not been cut away.

It will now be understood that when it is desired to effect theconnection of the helmet to the dress and breast-plate the upper part orcollar F of the dress F is placed in position in the ring 0, so that thefillet E, Fig. 1*, enters the groove D, as shown in Figs. 1, 3, and 4.The helmet is then placed with its ring J in the rabbet of the ring 0 bypassing the portions of the screw-thread K which remain on the ring Jinto the spaces I in the screw-thread H of the ring 0, the parts of thescrew-thread H on the ring 0 which have not been cut away correspondingwith those parts on the ring J where the thread K has been cut away. Thehelmet is then turned round about a sixth of a revolution in the ring 0,so that the screw-threads H and K engage with one another, causing thering J to squeeze the upper flanged part F of the dress F firmly betweenitself and the ring 0 so as to form a water-tight joint. The fillet E ofthe dress F being pressed into the groove D prevents the collar of thesaid dress from being drawn out from between the rings 0 and J.

\Vhen it is desired to remove the helmet, it is only necessary to turnit back about a sixth of a revolution until the screw-threads on thering J become disengaged from those on the ring 0, when the helmet canbe lifted out of the latter, and then the collar F of the dress F, ifrequired, without removing any nuts or screws Whatever, wherebyconsiderable time is saved and great convenience secured.

If preferred, the fillet E may be formed on the upper side of the flangeF vof the dress F 1 and be made to take into a groove or rabbet on thering J of the helmet, as shown in Fig. 5, instead of into a groove inthe ring 0 of the breast-plate, as shown in Figs. 1,3, and 4.

I claim 1. The improved means of attaching the helmet and breast-plateto a diving-dress, which consists of a screwed ring J on the helmet anda corresponding screwed ring 0 on the breast-plate, forming together ascrew bayonet-joint, in combination with a divingdress, the upper partor collar of which is formed with a flanged part F, which takes betweenthe said rings J and C, substantially as hereinbefore described, andillustrated in the drawings, and for the purposes specified.

2. The improved diving-dress, the upper part or collar F of which isprovided with a 20 flange F and a fillet or lip E, substantially ashereinbet'ore described, and illustrated in the drawings, and for thepurposes specified.

In testimonythat I claim the foregoing as my invention I have signed myname in pres- 25 ence of two subscribing witnesses.

ALFRED E. STOVE. Witnesses:

T. T. BARNES,

17 Gracechurch Street, London, E. O. STEPHEN EDWARD GUNYON,

115 Cannon Street, London, E. O.

